Commit 3223f59f authored by Ingo Molnar's avatar Ingo Molnar
Browse files

x86: EFI set_memory_x()/set_memory_uc() fixes 



The EFI-runtime mapping code changed a larger memory area than it
should have, due to a pages/bytes parameter mixup.

noticed by Andi Kleen.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent cae30f82

arch/x86/kernel/efi.c

+2 −2
Original line number Diff line number Diff line
@@ -391,7 +391,7 @@ static void __init runtime_code_page_mkexec(void) 
		if (md->type != EFI_RUNTIME_SERVICES_CODE)

			continue;



		set_memory_x(md->virt_addr, md->num_pages << EFI_PAGE_SHIFT);

		set_memory_x(md->virt_addr, md->num_pages);

	}

}
@@ -434,7 +434,7 @@ void __init efi_enter_virtual_mode(void) 
		}



		if (!(md->attribute & EFI_MEMORY_WB))

			set_memory_uc(md->virt_addr, size);

			set_memory_uc(md->virt_addr, md->num_pages);



		systab = (u64) (unsigned long) efi_phys.systab;

		if (md->phys_addr <= systab && systab < end) {